Agaricacese 



Coiiybia. C. spinillifera Pk. spinula, a little thorn. Pileus fleshy, thin, con- 

 vex or nearly plane, glabrous, hygrophanous reddish tan-color tinged 

 with pink and slightly striatulate on the margin when moist, paler when 

 dry, adorned with minute colored spinules or setae. Gills narrow, close, 

 rounded behind and free, pale cinnamon-color, becoming somewhat 

 darker with age, spinuliferous. Stem slender, tough, glabrous, shining, 

 hollow, reddish-brown, often paler or whitish at the top, especially in 

 young plants, with a whitish myceloid tomentum at the base. Spores 

 elliptical or nearly so, 47*. 



Plant cespitose. Pileus 8-16 lines broad. Stem 2-3 in. long, about 

 I line thick. 



Prostrate trunks and ground among leaves in woods. Lewis county. 

 September. 



In this species the lamellae, under a lens, appear to be minutely 

 pubescent or velvety. This is due to the colored spinules or setae which 

 clothe them. Peck, 49th Rep. N. Y. State Bot. 



Angora, Pa. September, 1897. Among moss in mixed woods. 

 September to frost. Mcllvaine. 



Specimens identified by Professor Peck. Stems of some tapered at base. 



Excepting the extreme base of stems the whole plant is tender and 



of good flavor. 

 ( Plate XXXIo.) 



COLLYBIA ACERVATA (young). 



C. acerva'ta Fr. acervus, a heap. 

 Pileus fleshy but thin, convex 

 or nearly plane, obtuse, glabrous, 

 hygrophanous, pale tan-color or 

 dingy pinkish-red and commonly 

 striatulate on the margin when moist, 

 paler or whitish when dry. Gills 

 narrow, close, adnexed or free, whit- 

 ish or tinged with flesh-color. Stem 

 slender, rigid, hollow, glabrous, red- 

 dish, reddish-brown or brown, often 

 whitish at the top, especially when 

 young, commonly with a white 

 matted down at the base. Spores 

 elliptical, 6x3-4/x.. 



Plant cespitose. PileilS 1-2 in. 

 broad. Stem 2-3 in. long, about I 

 line thick. 

 122 



